Air Brakes #1
Air Brakes Endorsement Test | Maine 2025 #1 Page 4 of 4
Train for FREE online with our Maine CDL air brake test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a ME Class A/Class B driver license in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that the requirements for CDL may vary from state to state.
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19 . A low air pressure warning signal should activate:
In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 60 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.
20 . The air compressor is connected to the:
The air compressor of an air brake system is connected to the engine through gears or a v-belt. The compressor may be air-cooled or cooled by the engine cooling system.
21 . When parking, you should not use the parking brake if:
If your brakes are hot after coming down a steep grade, you should not use your parking brake when parking. Let your brakes cool before applying the parking brake or risk damaging the brakes.
22 . An application pressure gauge shows:
If a vehicle is equipped, an application pressure gauge shows how much air pressure is being applied to the brakes. This gauge can help a driver identify if their brakes are beginning to fade.
23 . What do the two systems of a dual air brake system share?
Both systems in a dual air brake systems share a single air compressor. If the air compressor is damaged, neither system will be able to operate properly.
24 . The ____ between an air compressor and reservoir tank prevents air from escaping if the air compressor has a leak.
A one-way check valve is required to be between an air compressor and the first main reservoir. This valve prevents air from escaping the system if the air compressor develops a leak.
25 . While driving, ____ generally holds spring brakes in place.
While driving, spring brakes are generally held in place by air pressure. If the air pressure gets low enough, the springs will activate the brakes.
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2025 Maine | Frequently Asked Questions
To secure a CDL Bus endorsement in Maine, you must first have a Commercial Driver's License (CDL). Then, pass the passenger endorsement test which covers topics like inspecting passenger vehicles, loading and trip start procedures. Additionally, you must pass a skills test in a bus similar to the one you'll be driving. Remember, additional requirements may apply depending on specific job roles.
To obtain a CDL Bus license in Maine, you'll need to have a valid driver's license, pass the CDL general knowledge test, and complete the Passenger Transport Endorsement test. Additionally, you'll need to pass a CDL skills test in a bus-like vehicle. A medical examination and background check are also required. Check with Maine's Bureau of Motor Vehicles for more details.
Yes, specific training is necessary for a CDL Bus endorsement. After obtaining a Commercial Driver’s License (CDL), you must pass the Passenger Endorsement written test. Some employers also require on-the-job training where you will learn how to operate a bus, handle passengers, and manage emergency situations. Check with your employer or local DMV for specific requirements.
CDL Bus licenses fall under three main classifications: Class A, Class B, and Class C. Class A is for vehicles towing trailers over 10,000 pounds. Class B is for single vehicles over 26,000 pounds or towing trailers less than 10,000 pounds. This includes buses. Class C is for vehicles carrying 16 or more passengers including the driver. Each class requires different tests.
No, you cannot use your personal vehicle for the CDL Bus driving test. The vehicle used for the test must match the type and class of vehicle that matches the CDL you are attempting to obtain. For a bus endorsement, you would need to test in a bus. Check with your local DMV or training school for available options.
During the CDL Bus driving test, examiners evaluate skills like pre-trip vehicle inspection, basic vehicle control, and on-road driving. You may be asked to perform maneuvers like turning, merging, backing up, and parallel parking. They also assess your knowledge on handling emergencies, passenger safety protocols, and understanding of bus-specific traffic laws.
Yes, additional medical prerequisites are required for a CDL Bus endorsement in Maine. Applicants must pass a Department of Transportation (DOT) physical examination every 24 months. The exam assesses vision, hearing, blood pressure, and checks for conditions like epilepsy or heart disease that could affect driving ability. A Medical Examiner's Certificate is issued upon passing.
No, it's not permissible to transport passengers without a valid CDL Bus endorsement. Operating a commercial passenger vehicle without the appropriate licensing and endorsements is illegal and can result in hefty fines, suspensions, or even revocation of your CDL. It's crucial to obtain the necessary licenses and endorsements to ensure passenger safety and legal compliance.
The CDL Bus endorsement can be added to your existing CDL. You'll need to pass the passenger transport test and a skills test in a passenger vehicle. It's not a whole new application, but you will have to pay additional fees for the endorsement and possibly for the testing, depending on your state's regulations.
Yes, drivers with a CDL Bus endorsement in Maine must adhere to certain restrictions. They cannot operate a commercial vehicle if their blood alcohol concentration is 0.04% or higher. They are also subject to hours-of-service regulations, which limit the number of consecutive hours they can drive. Violations can result in fines, license suspension, or disqualification.
